The racing was keen today. However, after the hard work was over, 53s was all that separated 1st from 4th place, the same as the end of yesterday, they're just in a slightly different order. Looking at the roadbook for tomorrow's stage leaves the question unanswered and literally any combination of order of those 4 riders could be the result in the classification.
A Grand Tour GC hasn't been this close for this many riders in a long time. All that can be said with any certainty is that when the clock stops tomorrow for the final time, one rider will have caused upset and one rider will have missed out on a podium place by a shockingly narrow margin. I doubt a TT has been this exciting since Lemond vs Fignon.